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Home > Scooters > Jonway Scooters > Expressway 250 Scooter YY250T 244cc CN250 > CN250 75mm Cylinder Kit with Forged Piston  CN250 75mm Cylinder Kit with Forged Piston Cylinder Forged Piston Kit 75mm stock is 72mm
Kits is for vertical CN250 172mm engine used is a lot scooters plus Go Carts The engine is well made and has proven results and made that much better when high performance parts are used. Hammerhead Carts use these engines Most scooter and go carts the use the CN250 which Honda used in the Helix in the 80s and the chinese are just taking advantage of this which we think is great. Its all about the piston which complete the upgrade for better performance on top end plus much better torque. Kits include 75mm cylinder which we have bored stock cylinders we get from CF Moto. Piston is a 75mm which measure outs just as cylinder does to 73.35mm plus rings, wrist pins and gaskets. The whole point is racing piston which makes compression area smaller so you get a more powerful explosion which adds torque and power which equals better over all performance for take off and top end. The measurements are not exact and measure out at around 73.5mm with stock being 70.50mm and change. We also have without forged piston at 249.99 same kit at 75mm call to order this one   
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